Foldable chair



FIG. 1 is a front perspective view, from above and one side, of the foldable chair of my new design;

FIG. 2 is a front perspective view from above, and from the opposite side as FIG. 1, of the foldable chair of my new design, in a folded position;

FIG. 3 is a front elevation view of the foldable chair of my new design; and,

FIG. 4 is a top plan view of the foldable chair of my new design. 

The ornamental design for a foldable chair, as shown and described. 